I'd have thought so

In theory, it should kick out enough juice to run the bike and charge the battery

However, the battery is also used to absorb any spikes in output and provide extra juice when needed, eg. for indicators, brake lights etc

Also, the alternator will not give out enough power to even run the bike while the engine is just ticking over

But why would you want to do this?
If you stall, you'll be stuffed

Too old to die young, too ugly to leave a good looking corpse